ELQA MP3 08 Septembre 2010, R. Mompo, TE/MTE-EI ELQA IPQs Splice measurements “New” current cycle applied since July 2010 Impact of low band passive filters on the quality of our meas. RQ10.L8 without filters RQ10.L8 with 166 Hz filters RQ10.R4 with 7 Hz filters Summary of measurements performed this summer: In L4 on 23 & 29/07/2010 In R8 from 29/07 to 27/08/2010 In R2 on 02/09/2010 In R4 on 02/09/2010 R. Mompo on behalf of ELQA team
ELQA MP3 08 Septembre 2010, R. Mompo, TE/MTE-EI ELQA IPQs Splice measurements “New” current cycle applied since July 2010 Impact of low band passive filters.
Dec 13, 2015
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ELQAM
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IPQs Splice measurements
“New” current cycle applied since July 2010Impact of low band passive filters on the quality of our meas.
RQ10.L8 without filtersRQ10.L8 with 166 Hz filtersRQ10.R4 with 7 Hz filters
Summary of measurements performed this summer:In L4 on 23 & 29/07/2010
In R8 from 29/07 to 27/08/2010In R2 on 02/09/2010 In R4 on 02/09/2010
R. Mompo on behalf of ELQA team
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~ 1 hour per magnet
Example of cycles used as from July 2010
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Measured on
04/05/2010
without filtersSame voltage scale
Impact of low band passive filters on the quality of our meas. (1/3)
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Re-measured on
22/06/2010
with 166Hz filters =>
Slightly betterSame voltage scale
Impact of low band passive filters on the quality of our meas. (2/3)
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RQ10.R4 on 02/09/2010
with 7Hz filters => Perfect
measurementsSame voltage scale
Impact of low band passive filters on the quality of our meas. (3/3)
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If we zoom, we clearly see
the different steps
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In fact, we even see an effect on the measurement of one aperture when the current is ramping in the other aperture!
This effect is filtered during the manual analyses but not yet in ISRM program
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R [nW](Manual analyses)
R. Mompo
R [nW](Automatic analyses)
MSE [e-9](Automatic analyses)
Q10.L4 DFLCS.7L4.1 5.3 6.1 0.06
DFLCS.7L4.2 5.4 5.2 0.04
DFLCS.7L4.3 6.0 5.2 0.117
Q9.L4 DFLCS.7L4.4 5.7 / 5.4 12.0 / 6.1 * 5.6 / 4.8 *
DFLCS.7L4.5 5.6 / 6.1 5.6 / 5.9 0.008 / 0.145
DFLCS.7L4.6 5.4 / 4.9 18.4 / 17.8 * 5.7 / 4.9 *
Q8.L4 DFLCS.7L4.7 5.1 6.3 0.045
DFLCS.7L4.8 4.6 4.6 0.002
DFLCS.7L4.9 5.3 4.7 0.013
Q7.L4 DFLCS.7L4.10 5.3 0.6 * 0.7 *
DFLCS.7L4.11 5.1 5.1 0.117
DFLCS.7L4.12 5.6 7.6 * 0.3 *
Measurements performed in L4 on 23 & 29/07/2010 with a 7 Hz low band filter on the input of the 3 DVM cards of PXIELQA01 and 5 min current plateaus cycles.
*: File format error to be corrected in ISRM software
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Configuration of the « ACB » and « BCA » switches were not correct !!!
Problem corrected on 26/07/2010 but measurements had to be repeated…
Sorry!
Measurements performed in R8 on 23/07/2010 with a 7 Hz low band filter on the input of the 3 DVM cards of PXIELQA02 and 5 min current plateaus cycles.
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R [nW](Manual analyses)
R. Mompo
R [nW](Automatic analyses)
MSE [e-9](Automatic analyses)
Q10.R8 DFLCS.7R8.1 3.6 0.2 * 1.3 *
DFLCS.7R8.2 3.3 3.1 0. 359
DFLCS.7R8.3 8.5 16.3 * 0.912 *
Q9.R8 DFLCS.7R8.4 6.4 6.4 0.546
DFLCS.7R8.5 5.3 5.7 0.499
DFLCS.7R8.6 5.0 6.7 0.554
Q8.R8 DFLCS.7R8.7 4.7 5.7 * 2.6 *
DFLCS.7R8.8 4.8 4.8 0.069
DFLCS.7R8.9 5.7 12.3 * 1.3 *
Q7.R8 DFLCS.7R8.10 6.1 5.7 0.004
DFLCS.7R8.11 5.3 5.2 0.002
DFLCS.7R8.12 5.3 5.3 0.0005
Measurements performed in R8 from 29/07 to 27/08/2010 with a 7 Hz low band filter on the input of the 3 DVM cards of PXIELQA02 and 5 min current plateaus cycles.
*: File format error to be corrected in ISRM software
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R [nW](Manual analyses)
R. Mompo
R [nW](Automatic analyses)
MSE [e-9](Automatic analyses)
Q10.R2 DFLCS.7R2.1 5.8 11.5 * 10.8 *
DFLCS.7R2.2 3.3 3.5 0.417
DFLCS.7R2.3 5.3 22.2 * 6.1 *
Q9.R2 DFLCS.7R2.4 7.5 7.3 0.0003
DFLCS.7R2.5 6.1 6.5 0.0003
DFLCS.7R2.6 5.1 5.7 0.0003
Q8.R2 DFLCS.7R2.7 4.5 3.8 * 2.0 *
DFLCS.7R2.8 4.7 4.7 0.043
DFLCS.7R2.9 5.2 11.6 * 1.7 *
Q7.R2 DFLCS.7R2.10 3.8 3.9 0.001
DFLCS.7R2.11 4.2 4.2 0.001
DFLCS.7R2.12 4.0 3.5 0.005
Measurements performed in R2 on 02/09/2010 with a 7 Hz low band filter on the input of the 3 DVM cards of PXIELQA02 and 5 min current plateaus cycles.
*: File format error to be corrected in ISRM software
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R [nW](Manual analyses)
R. Mompo
R [nW](Automatic analyses)
MSE [e-9](Automatic analyses)
Q10.R4 DFLCS.7R4.1 5.9 14.6 * 11.8 *
DFLCS.7R4.2 7.3 7.3 0.002
DFLCS.7R4.3 6.1 23.7 * 6.1 *
Q9.R4 DFLCS.7R4.4 6.5 7.0 0.013
DFLCS.7R4.5 7.7 7.7 0.003
DFLCS.7R4.6 7.5 6.9 0.067
Q8.R4 DFLCS.7R4.7 7.1 4.6 * 2.4 *
DFLCS.7R4.8 6.5 6.4 0.008
DFLCS.7R4.9 7.1 13.6 * 1.7 *
Q7.R4 DFLCS.7R4.10 5.5 5.7 0.002
DFLCS.7R4.11 5.6 5.5 0.001
DFLCS.7R4.12 5.6 5.3 0.003
Measurements performed in R4 on 02/09/2010 with a 7 Hz low band filter on the input of the 3 DVM cards of PXIELQA01 and 5 min current plateaus cycles.
*: File format error to be corrected in ISRM software
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Conclusions
• The last measurements performed with 7 Hz low band filters are giving
very good results. This is translated by the MSE (Mean Square Error) value
than is now reduced by a factor 1000.
• I still have to provide a tolerance for those measurements correlated to
the MSE value.
• We still have 1 technical stop before the end of the year to measure
possibly 2 new positions (with 2 systems).
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